Padlock



UNITED STATES.

PATENT OFFICE.

EDWVARD T. FRAIM, OF LANCASTER, PENNSYLVANIA.

PAD LOCK.

SPECIFICATION forming part of Letters Patent No. 479,414, dated July 26,1892.

Application filed October 30, 1891- $erial No. 410,382. (ModeL) To allwhom it may concern.-

Be it known that I, EDWARD T. FEAIM, a citizen of the United States,residing in Lancaster, in the county of Lancaster, State ofPennsylvania, have invented certain Improvements in Padlocks, of whichthe following is a speci fication.

This invention relates to improvements in that class of padlocks inwhich a U-shaped longitudinally-moving shackle is employed, having thefast limb thereof held in said case bya spring extending transverselythere of 3 and the invention consists in the construction andcombination of the various parts, as hereinafter fully described, andthen specifically pointed out in the claims.

In the drawings which form a part of this specification, Figure 1 is aside view of the lock, the front of the case being cutaway to show theinterior mechanism. Fig. 2 is a horizontal section of the lock on theline an ac, Fig. 1. Fig. 3 is a top perspective view of the platelocated above the spring, and Fig. 4 a similar view of the ward-platenext below the spring. Fig. 5 is a top plan View of the stationary platebetween the two ward-plates, and Fig. 6 a perspective view of the innerface of the bottom plate of the case.

Similar letters indicate like parts throughout the several views.

Referring to the details of the drawings, A indicates thelock-case; B,the shackle; b, the short or swinging limb of the shackle, and b thelong or fast limb, having notches 12 cut in opposite sides of the bodythereof and a boss 12 formed on its end.

N indicates vertical ribs cast on opposite sides of the case to preventrotary movement of the diiferent plates located between them.

D is a stationary plate having a centrallylocated aperture 01 thatreceives and steadies the heel of the key, studs d being formed on itsupper face to prevent contact of the key with the top of the case. Onthe lower face of plate D there are cast four legs d, between which isplaced the V-shaped spring E, extending horizontally between the ends ofthe case. The head e of the spring is cylindrical in general outline andreceives the short limb b when the shackle is locked in the case, asseen in Figs. 1 and 2, the leaves 6 at the same time engaging thenotches in the limb b.

The legs d rest upon a ward-plate F, having a central winged key-openingand a semicircular extension f, projecting under and supporting the heade of the spring. Legs f eX- tend downward from ward F and rest upon thestationary plate G, having a circular aperture g of sufficient diameterto permit a ward of the key to revolve therein. The legs g on the lowerface of plate G bear upon a ward-plate H, similar in construction towardplate F and having its legs h resting upon the bottom plate of thecase.

M designates the bottom plate, which is put in place after the interiormechanism is inserted in the case and is there secured by riveting overthe edges of the vertical walls of the look, as shown in Fig. 1. In thebottom plate there is a winged key-opening similar to those in theward-plates F and II, and on diagonally-opposite sides of saidkey-openings are formed stops m, adapted to limit the revolution of thekey. Near one end of said plate is a lug m, located to engage the innerside of the boss 6 when the shackle is locked in the case, the long limbwhen the shackle is so locked extending down to the bottom plate. Thelong limb b tapers downward from the notches b to the boss 11 which isof greater diameter than the maximum distance apart that the legs d ofplate D allow the leaves 6' to be separated, so that the spring E notonly serves to lock both limbs of the shackle in the case, but alsoprevents the long limb being detached when the other is withdrawn. Thelegs d prevent any transverse displacement of spring E and hold it inposition to be engaged with the notches in the long limb of the shackle,while ward-plate F affords a single uniform bearing for the body andhead of said spring, the said two plates preventing any verticaldisplacement of the spring by the pressure of either of the limbs uponits inner surface.

As will be observed, all the plates are cast separately from the case,thus rendering the casting of both the case and plates much easier andcheaper than when the supports for the spring are formed with the case.I

In other locks of this class the shackle can be moved somewhat from sideto side, and thus slightly move the several plates, so as to facilitatethe use of false keys to open the lock. The lug m, which has a curvedouter face that fits up snugly against the boss b prevents any movementof the shackle and holds it rigidly in its place.

There is another and very important advantage in the construction ofthis lock over that of others of the same class in which separate anddistinct devices are employed for locking both limbs of the shackle inthe case and for preventing the detachment of the long limb when theshorter one is withdrawn. In my lock the same spring performs bothduties. This not only simplifies and cheapens the construction of thelook, but materially reduces the time and labor required in putting .theparts together.

Having thus described my invention, what I claim as new, and desire tosecure byLetters Patent, is

1. In a padlock, the combination, with the case and shackle, of astationary plate having legs formed on one face thereof, a springlocated between said legs and extending horizontally between the ends ofthe case, said spring being adapted to engage the long limb of theshackle to lock both limbs in the case and prevent the long limb beingwithdrawn therefrom, and means for holding the spring in place,substantially as and for the purpose specified.

2. In a padlock, the combination, with a case having vertical ribsformed therein, of a shackle with notches cut in the body of the longlimb and a boss formed on the end thereof, an upper plate locatedbetween said ribs and having an aperture through it, studs on the upperand legs on the lower face of said plate, a V-shaped spring locatedbetween said legs and adapted to engage with the notches and boss ofsaid long limb, and means for holding the spring between said legs,substantially as and for the purpose specified.

3. In a padlock, the combination, with a case having vertical ribsformed therein, of a shackle with notches cut in the body of the longlimb and a boss formed on the end thereof, an upper perforated platelocated between said ribs and having studs on the upper and legs on thelower face thereof, a V-shaped spring located between said legs andhaving a head constructed to receive the short limb of the shackle, theleaves of the spring being adapted to engage with the notches and bossof the long limb, a stationary plate located below said spring andhaving an extension projecting under the head thereof, and means forsupporting the stationary plate, substan tially as and for the purposespecified.

4. In a padlock, the combination, with a case having vertical ribsformed therein, of the long limb of the shackle, constructed to beengaged by a spring to' lock both limbs in the case and prevent the longlimb being withdrawn therefrom, an upper stationary plate locatedbetween said ribs and having legs formed on one face thereof, a springlocated between said legs adapted to engage the long limb of theshackle, and plates resting upon the bottom of the case and supportingthe upper stationary plate, substantially as and for the purposespecified.

5. In a padlock, the combination, with a case having vertical ribsformed therein, of a shackle with notches cut in the body of the longlimb and a boss formed on the end thereof, an upper perforated platelocated between said ribs and having studs on the upper and legs on thelower face thereof, a V-shaped spring located between said legs andhaving a head constructed to receive the short limb of the shackle, theleaves of the spring being adapted to engage with the notches and bossof the long limb, a stationary plate located below said spring andhaving an extension projecting under the head thereof, and platesresting on the bottom of the case and supporting the stationary platebelow the spring, substantially as and for the purpose specified.

6. In a padlock, the combination, with a case having vertical ribsformed therein, of a shackle with notches cut in the body of the longlimb and a boss formed on the end thereof, an upper perforated platelocated between said ribs and having studs on the upper and legs on thelower face thereof, a V-shaped spring located between said legs andhaving a head constructed to receive the short limb of the shackle, theleaves of the spring being adapted to engage with the notches and bossof the long limb, a stationary plate located below said spring andhaving an extension projecting under the head thereof, plates resting onthe bottom of the case and supporting the stationary plate below thespring, and a lug formed on the bottom of the case and adapted to engagethe boss on the long limb of the shackle when locked in the case,substantially as and for the purpose specified.

EDWARD T. FRAIM.

Witnesses:

I. O. ARNOLD, WM. R. GERHART.

